A crystal of sodium chloride breaks cleanly when broken parallel to a cleavage plane, but shatters when the knife is placed at an angle to the cleavage plane.
Soap bubbles in a raft form grains of close-packed arrays with various orientations relative to each other.
A piece of tape pressed against a sample of molybdenum sulfide will peel off layers of the sample. Additional tape can be used to cleave the peeled sample hundreds of times.
A piece of glass is scratched with a diamond-tipped stylus, showing that diamond is harder than glass.
A cast iron bomb is completely filled with ice water, then placed into a dry-ice/acetone slush and covered with a wooden box. When the water in the bomb freezes, the cast iron bomb explodes, breaking into several pieces, and destroying the box in which it was placed.